pulsometer pump
... pulsing voltmeter 脉冲电压表 pulsometer pump 蒸汽抽水泵 pulsometer 脉搏计 ...
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最初，蒸汽机只是应用于抽水泵和开矿，博尔顿鼓励瓦特扩大蒸汽机的应用。
Boulton encouraged Watt to expand the application of the engine, which was originally used just for pumping and mining work.
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